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Cheap flights from Ontario to Seoul from $715

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Seoul departing on 8/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
12:45 am - 6:15 pm
ONT
-
GMP
25h 30m
2 stops
Multiple Airlines Logo
8:10 am - 6:00 pm
GMP
-
ONT
25h 50m
2 stops
$1,662Multiple Airlines
Mon, Aug 31 - Tue, Sep 22
Multiple Airlines Logo
12:45 am - 9:25 pm
ONT
-
GMP
28h 40m
2 stops
Multiple Airlines Logo
7:20 am - 6:40 pm
GMP
-
ONT
27h 20m
2 stops
$1,665Multiple Airlines
Wed, Aug 26 - Sun, Sep 6
Multiple Airlines Logo
12:45 am - 4:15 pm
ONT
-
GMP
23h 30m
2 stops
Multiple Airlines Logo
8:10 am - 6:40 pm
GMP
-
ONT
26h 30m
2 stops
$1,714Multiple Airlines
Fri, Jul 24 - Mon, Aug 3
Multiple Airlines Logo
12:45 am - 10:25 pm
ONT
-
GMP
29h 40m
2 stops
Multiple Airlines Logo
8:10 am - 5:40 pm
GMP
-
ONT
25h 30m
2 stops
$1,900Multiple Airlines
Sat, Jul 4 - Wed, Jul 15
Multiple Airlines Logo
12:45 am - 4:15 pm
ONT
-
GMP
23h 30m
2 stops
Multiple Airlines Logo
8:10 am - 6:40 pm
GMP
-
ONT
26h 30m
2 stops
$1,913Multiple Airlines
Sat, Jul 4 - Sun, Jul 12
Multiple Airlines Logo
12:45 am - 4:15 pm
ONT
-
GMP
23h 30m
2 stops
Multiple Airlines Logo
8:10 am - 6:40 pm
GMP
-
ONT
26h 30m
2 stops
$1,914Multiple Airlines
Sat, Jul 4 - Sun, Jul 12
Multiple Airlines Logo
12:45 am - 10:25 pm
ONT
-
GMP
29h 40m
2 stops
Multiple Airlines Logo
8:10 am - 6:40 pm
GMP
-
ONT
26h 30m
2 stops
$1,950Multiple Airlines
Fri, Jul 24 - Sat, Aug 1
Multiple Airlines Logo
12:45 am - 10:25 pm
ONT
-
GMP
29h 40m
2 stops
Multiple Airlines Logo
8:10 am - 6:40 pm
GMP
-
ONT
26h 30m
2 stops
$1,952Multiple Airlines
Sun, Aug 2 - Sun, Aug 9
Multiple Airlines Logo
2:22 pm - 9:15 pm
ONT
-
GMP
38h 53m
2 stops
Multiple Airlines Logo
7:15 pm - 11:47 am
GMP
-
ONT
32h 32m
2 stops
$2,015Multiple Airlines
Wed, Sep 9 - Wed, Sep 23
Multiple Airlines Logo
12:10 am - 6:00 pm
ONT
-
GMP
25h 50m
2 stops
Multiple Airlines Logo
11:25 am - 5:40 pm
GMP
-
ONT
22h 15m
2 stops
$2,158Multiple Airlines
Mon, Jun 29 - Fri, Jul 3

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Japan Airlines flights from Ontario to Seoul Gimpo Intl Airport

Our best Japan Airlines deals on Ontario to Seoul Gimpo Intl Airport flight tickets
Japan Airlines
Jul 20
ONT6:02 amOntario
36h 38m
2 stops
GMP10:40 amSeoul Gimpo Intl
Jul 27
GMP7:15 pmSeoul Gimpo Intl
37h 15m
2 stops
ONT4:30 pmOntario
$2,195
Japan Airlines
Jul 21
ONT6:02 amOntario
36h 38m
2 stops
GMP10:40 amSeoul Gimpo Intl
Jul 28
GMP8:00 amSeoul Gimpo Intl
24h 30m
2 stops
ONT4:30 pmOntario
$2,246
Japan Airlines
Jul 22
ONT6:02 amOntario
36h 38m
2 stops
GMP10:40 amSeoul Gimpo Intl
Jul 29
GMP7:15 pmSeoul Gimpo Intl
37h 15m
2 stops
ONT4:30 pmOntario
$2,432

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Seoul Gimpo Intl Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 14, 2026.
Use the filters below to find and compare flights from Ontario to Seoul Gimpo Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 8/31

12:45 am-6:15 pm

2 stops25h 30m

Seoul Gimpo Intl

Tue 9/22

8:10 am-6:00 pm

2 stops25h 50m

$1,662

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Wed 8/26

12:45 am-9:25 pm

2 stops28h 40m

Seoul Gimpo Intl

Sun 9/6

7:20 am-6:40 pm

2 stops27h 20m

$1,665

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 7/24

12:45 am-4:15 pm

2 stops23h 30m

Seoul Gimpo Intl

Mon 8/3

8:10 am-6:40 pm

2 stops26h 30m

$1,714

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 7/4

12:45 am-10:25 pm

2 stops29h 40m

Seoul Gimpo Intl

Wed 7/15

8:10 am-5:40 pm

2 stops25h 30m

$1,900

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 7/4

12:45 am-4:15 pm

2 stops23h 30m

Seoul Gimpo Intl

Sun 7/12

8:10 am-6:40 pm

2 stops26h 30m

$1,913

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sat 7/4

12:45 am-4:15 pm

2 stops23h 30m

Seoul Gimpo Intl

Sun 7/12

8:10 am-6:40 pm

2 stops26h 30m

$1,914

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Fri 7/24

12:45 am-10:25 pm

2 stops29h 40m

Seoul Gimpo Intl

Sat 8/1

8:10 am-6:40 pm

2 stops26h 30m

$1,950

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Sun 8/2

12:45 am-10:25 pm

2 stops29h 40m

Seoul Gimpo Intl

Sun 8/9

8:10 am-6:40 pm

2 stops26h 30m

$1,952

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Wed 9/9

2:22 pm-9:15 pm

2 stops38h 53m

Seoul Gimpo Intl

Wed 9/23

7:15 pm-11:47 am

2 stops32h 32m

$2,015
Quickest round-trip

OntarioSeoul

ONT - GMP

ONTGMP

Ontario

Mon 6/29

12:10 am-6:00 pm

2 stops25h 50m

Seoul Gimpo Intl

Fri 7/3

11:25 am-5:40 pm

2 stops22h 15m

$2,158

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Ontario to Seoul Gimpo Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Seoul Gimpo Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Seoul Gimpo Intl Airport (ONT to GMP) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Seoul Gimpo Intl Airport

Fastest flight time

25h 25m

Direct flights

None
The fastest flight from Ontario to Seoul Gimpo Intl Airport takes 25h 25m
There are no direct flights from Ontario to Seoul Gimpo Intl Airport. There are no popular flight routes from Ontario to Seoul Gimpo Intl Airport.
Search flight deals

Frequently asked questions about flying from Ontario to Seoul Gimpo Intl Airport

  • How far is Ontario to Seoul Gimpo Intl by plane?

    A flight from Ontario to Seoul Gimpo Intl will travel around 5983.3 mi. By plane, this route typically takes 25h 25m.

  • When did momondo last update prices for flights from Ontario Airport to Seoul Gimpo Intl Airport?

    Prices for flights from Ontario Airport to Seoul Gimpo Intl Airport were last updated today.

  • How old do you have to be to fly from Ontario Airport to Seoul Gimpo Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Seoul Gimpo Intl Airport.

  • What documentation or ID do you need to fly to Seoul Gimpo Intl Airport?

    The necessary travel and health documents for your Seoul Gimpo Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Ontario to Seoul Gimpo Intl Airport

  • How do I get Price Alerts for flights from Ontario to Seoul Gimpo Intl Airport?

    Price Alerts will notify you by email when the price for flights to Seoul Gimpo Intl Airport from Ontario decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Ontario to Seoul Gimpo Intl Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We show prices from over 700+ competitors with a single click. With options from airlines and OTAs from across our 30 international markets, we are able to show you a diverse range of deals to create your adventure.

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Seoul?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Seoul. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from Ontario with this policy.

How can momondo help me find flights from Ontario to Seoul?

momondo helps you find the best flight between Ontario and Seoul by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Ontario to Seoul right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seoul, momondo offers a useful price alert feature which will track prices for flights to Seoul from Ontario and alert you when they change.

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